DS6257AB Datasheet, PDF (5/15 Pages) –

RT6257A/B
Absolute Maximum Ratings (Note 1)
 Supply Input Voltage and EN Voltage, VIN, EN ---------------------------------------------------------------- −0.3V to 20V
 Switch Voltage, LX ---------------------------------------------------------------------------------------------------- −0.3V to 20V
<20ns -------------------------------------------------------------------------------------------------------------------- −5V to 27V
 BOOT to LX, V_BOOT − V_LX ------------------------------------------------------------------------------------------------------------------------------------ −0.3V to 6V
 Other Pins --------------------------------------------------------------------------------------------------------------- −0.3V to 6V
 Power Dissipation, P_D @ T_A = 25°C
TSOT-23-6 (FC) --------------------------------------------------------------------------------------------------------- 2.12W
 Package Thermal Resistance (Note 2)
TSOT-23-6 (FC), θ_JA --------------------------------------------------------------------------------------------------- 47°C/W
TSOT-23-6 (FC), θ_JC --------------------------------------------------------------------------------------------------- 2°C/W
 Junction Temperature ------------------------------------------------------------------------------------------------- 150°C
 Lead Temperature (Soldering, 10 sec.) --------------------------------------------------------------------------- 260°C
 Storage Temperature Range ----------------------------------------------------------------------------------------- −65°C to 150°C
 ESD Susceptibility (Note 3)
HBM (Human Body Model) ------------------------------------------------------------------------------------------ 2kV
Recommended Operating Conditions (Note 4)
 Supply Input Voltage -------------------------------------------------------------------------------------------------- 4.5V to 18V
 Junction Temperature Range ---------------------------------------------------------------------------------------- −40°C to 125°C
 Ambient Temperature Range ---------------------------------------------------------------------------------------- −40°C to 85°C
Electrical Characteristics
(VIN = 12V, TA = 25°C, unless otherwise specified)
Parameter
Symbol
Conditions
Min Typ Max Unit
Supply Voltage
VIN Supply Input Operating
Voltage
VIN
4.5
--
18
V
VIN Under-Voltage Lockout
Threshold-Rising
VUVLO
VIN rising
3.9 4.1 4.3 V
VIN Under-Voltage Lockout
Threshold-Hysteresis
VUVLO
-- 0.3 --
V
Supply Current
Supply Current (Shutdown)
Supply Current (Quiescent)
ISHDN
IQ
VEN = 0
--
3
-- A
IOUT = 0
VFB = VREF x 105%, not switching
--
115 --
A
Soft-Start
Soft-Start Time
tSS
-- 1.5 -- ms
Enable Voltage
EN Input High Voltage
EN Input Low Voltage
VEN_H
VEN_L
1.5 --
--
V
--
-- 0.4 V
Copyright ©2016 Richtek Technology Corporation. All rights reserved.
DS6257A/B-00 September 2016
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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